JL Audio LoC 22 Bedienungsanleitung

JL Audio Audio/Video-Konverter LoC 22

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Installation Applications

This product is designed for operation in vehicles with 12 volt, negative-ground

electrical systems. Using this product in systems with positive ground and/or

voltages other than 12 volts may result in damage to the product and will void the

warranty. This product is not certified or approved for use in aircraft.

Safety Considerations

• Install this product in a dry, well-ventilated location that does not interfere with your

vehicle’s safety equipment (air bags, seat belt systems, ABS brake systems, etc.).

• Securely mount this product so that it does not come loose in the event of a

collision or sudden jolt to the vehicle.

• Check before drilling to make sure that you will not be drilling into a gas tank,

brake line, wiring harness or other vital vehicle system.

• Do not run system wiring outside or underneath the vehicle. This is an extremely

dangerous practice, which can result in severe damage/injury.

• Use good quality crimp connectors (or solder with heat shrink tubing) when

making connections to a vehicle’s electrical system.

• Take the necessary precautions when making connections to the vehicle’s battery.

• Protect all system wires from sharp metal edges and wear by carefully routing

them, tying them down and using grommets and loom where appropriate.

Failure to do so may result in a dangerous short circuit.

Planning Your Installation

It is important that you take the time to read this manual and that you plan

your installation carefully. It is very easy to damage expensive vehicle systems

in modern automobiles. Never assume that you have found appropriate wires

without consulting a reliable wiring diagram or without performing signal testing

with proper test equipment. If you are uncomfortable or unfamiliar with reading

diagrams or testing signals, please enlist the services of your authorized JL Audio

dealer to perform the installation.

Product Description

The LoC™ 22 is an active two-channel processor engineered

to adapt the outputs from factory audio systems for use

with aftermarket amplifiers and signal processors.

The LoC™ 22 is equipped with the following features:

1. Fully active, all analog circuit design by Bruce Macmillan, handles

powerful factory amplifier outputs, up to 40 volts per channel

2. Differential-balanced input architecture offers noise rejection and

compatibility with most analog outputs from OEM source units and amplifiers

3. Dual range input load switch for maximum compatibility with OEM amplifiers

4. One stereo pair of crystal-clear, line-level RCA output jacks (up to 8V RMS)

5. Automatic turn-on via DC-Offset or Signal-Sensing

6. A dedicated 12V remote turn-on output to activate

aftermarket signal processors or amplifiers (similar to an

aftermarket head unit’s remote turn-on lead)

7. Onboard LED clipping indicator for quick & easy output level setting

What’s Included

(1) LoC™ 22 Line Output Converter

(1) 3-pin Power Connector plug

(1) 4-pin Input plug

(1) User manual

Installation Procedure/Making Connections

The LoC™ 22 uses removable plugs for making power and input signal

connections. Receptacles in each plug accept up to 16 AWG wire. To attach wires,

remove the plugs from the LoC™ 22 and use a small flathead screwdriver to back

out the set screws. Strip 1/4 inch (6 mm) of insulation from the end of each wire

and insert the bare wire into the receptacle, seating it firmly so that no wire is

exposed. While holding each wire in place, tighten the set screw firmly, taking care

not to strip the head of the screw.

Use caution to ensure correct polarity and wire placement of the Power and

Input signal connections.

Make sure to observe proper orientation when inserting the plugs into the

LoC™ 22. Each plug is keyed to fit in one direction only. When inserted

correctly, the set screws should be facing up.

LoC™ 22 Top View LoC™ 22 Input Panel

LoC™ 22 Power Connector / Line Outputs Panel

1 Power Connector 4 Line Outputs

2 Input Connector 5 Turn-on Mode

3 Input Load 6 Output Level

+12V

Ground

Remote Out

1 4 5

3 2

OWNER’S MANUAL

Limited Warranty – Electronics (USA)

JL Audio warrants this product to be free of defects in materials and workmanship for a period of two

(2) years from the original date of purchase. This warranty is not transferable and applies only to the

original purchaser from an authorized JL Audio dealer. Should service be necessary under this warranty

for any reason due to manufacturing defect or malfunction, JL Audio will (at its discretion), repair or

replace the defective product with new or remanufactured product at no charge. Damage caused by

the following is not covered under warranty: accident, misuse, abuse, product modification or neglect,

failure to follow installation instructions, unauthorized repair attempts, misrepresentations by the

seller. This warranty does not cover incidental or consequential damages and does not cover the cost

of removing or reinstalling the unit(s). Cosmetic damage due to accident or normal wear and tear is not

covered under warranty.

Warranty is void if the product’s serial number has been removed or defaced.

Any applicable implied warranties are limited in duration to the period of the express warranty as

provided herein beginning with the date of the original purchase at retail, and no warranties, whether

express or implied, shall apply to this product thereafter. Some states do not allow limitations on

implied warranties, therefore these exclusions may not apply to you. This warranty gives you specific

legal rights, and you may also have other rights, which vary from state to state.

If you need service on your JL AUDIO product:

All warranty returns should be sent to JL Audio ’s Electronics Service Facility freight-prepaid through an

authorized JL Audio dealer and must be accompanied by proof of purchase (a copy of the original sales

receipt). Direct returns from consumers or non-authorized dealers will be refused unless specifically

authorized by JL Audio with a valid return authorization number. Warranty expiration on products

returned without proof of purchase will be determined from the manufacturing date code. Coverage

may be invalidated as this date is previous to purchase date. Non-defective items received will be

returned freight-collect. Customer is responsible for shipping charges and insurance in sending the

product to JL Audio. Freight damage on returns is not covered under warranty.

For Service Information in the U.S.A. please call

JL Audio Customer Service:

(954) 443-1100

9:00 AM – 5:30 PM (Eastern Time Zone)

JL Audio, Inc.

10369 North Commerce Pkwy.

Miramar, FL 33025

(Do not send product for repair to this address)

International Warranties:

Products purchased outside the United States of America are covered only

by that country’s distributor and not by JL Audio, Inc.

Specifications

Electrical Specications

Power Supply Type Switching, MOSFET PWM, Regulated

Operating Voltage 9 – 16V DC

Standby / Operating Current Draw < 1.6 mA / 0.13 A at 13.8V

Frequency Response 3 Hz - 32 kHz (+0 dB, -1dB)

S/N Ratio @ 2V RMS Gain at Min: 118 dB

Gain at Max: 103 dB (20 kHz Bandwidth)

Remote Output Capacity 100 mA (maximum)

Recommended Fuse Value / Type 1 A / Fast-Acting, ATO/ATC or similar

OEM Input Section

Number of Input Channels / Type Two / Dierential-Balanced

Input Voltage 40V RMS per channel (maximum)

Input Impedance Normal: 20 kΩ / Low Z: 60 Ω

Turn-On Threshold

DC-Oset: 4.5 V

Signal-Sensing: 5 mV On/3.5 mV O at

1 kHz (Left Input)

Output Section

Number of Output Channels / Type Two / Unbalanced, via RCA Jacks

Max. Unclipped Output 8V RMS

Output Impedance 450 ohms

Gain Range -27.3 dB (full CCW) to +3.2 dB (full CW)

THD + Noise 0.01% at 2V RMS (1kHz)

Dimensions

L x W x H 4.72 in. x 3.04 in. x 1.23 in.

(120 mm x 77 mm x 31 mm)

LoC22-MAN-060418-rev1

1 Power Connector

The LoC™ 22 has a 3-pin “Power Connector” jack located next to the “Line Outputs”.

The Power Connector jack accepts the removable 3-pin plug and is used to make

the following connections:

Plug Connection Description

Power

Connector

+12V Positive (+12V) Power Connection

Ground Negative (GND) Ground Connection

Remote Out Positive (+12V) Turn-On Output

Failure to make safe, tight, high-integrity connections can result in fire and

extensive damage.

1. +12V: Connect this to a constant positive (+12V) source. The internal circuitry

of this connection is equipped with a self-resetting fuse designed to protect

the unit internally. To protect the vehicle and its electrical system from

damage, always install an appropriate fuse within 18 inches (45 cm) of the

+12V connection point. If this is the only device using the connection point,

we recommend using a 1A fuse.

2. Ground: Connect to a clean, solid metal grounding point. Ideally, the +12V

and Ground connections should be run to the same distribution points

that the amplifiers use for their power and ground connections. This will

minimize the possibility of noise in the system.

3. Remote Out: This connection provides a positive (+12V) turn-on voltage

(100 mA limit) to activate other aftermarket signal processors or amplifiers

(similar to an aftermarket head unit’s remote turn-on lead). If your equipment

requires more than 100 mA total for activation, this connection can be used

to trigger a relay to control the equipment in your system.

2 Input Connector

The LoC™ 22 accepts two channels of speaker-level audio output from an OEM

audio source (up to 40 V RMS per channel). Engineered to combat induced cable

noise, the input architecture is set up in a differential-balanced configuration,

making these inputs compatible with virtually any analog audio signal.

Connections are made via a 4-pin plug located on the side of the unit, with the

audio inputs separated in pairs (Left and Right). Refer to the table below when

making connections with your OEM audio source.

Plug Connection Description

Inputs

L+ Ch. 1

input

(+) Positive Left Channel Signal If the OEM subwoofer

signal is mono (one

ch. only), connect it to

both the left and right

channels, in parallel.

L– (–) Negative Left Channel Signal

R+ Ch. 2

input

(+) Positive Right Channel Signal

R– (–) Negative Right Channel Signal

It is very easy to damage expensive vehicle systems in modern automobiles.

Never assume that you have found appropriate wires without consulting

a reliable wiring diagram or without performing signal testing with safe

test equipment. If you are uncomfortable with reading diagrams or testing

signals, please enlist the services of your authorized JL Audio dealer to

perform the installation.

It is vital to observe the correct electrical polarity of each channel’s input

signal. Failure to do so can result in loss of signal and poor performance.

3 Input Load

Some factory audio amplifiers employ a load detection circuit that looks for a low-

impedance load (expecting a speaker) in order to enable audio output. When a

high-impedance load is connected to these factory amplifiers, the audio outputs

will mute.

After installing the LoC™ 22 and turning on the audio system, if there is no output

from the factory amplifier, change the position of the “Input Load” switch from

the default “Normal” position to the “Low Z” position. This will present a safe and

appropriate load to the factory amplifier and correct the muting behavior. Refer to

the “Output Level” section for additional information.

4 Line Outputs

The LoC™ 22 is equipped with a pair of analog RCA-type, line-level output jacks to

feed audio signals to your aftermarket system. Analog outputs are compatible with

most types of aftermarket signal processors or amplifiers. The level of this output

is configured using the “Output Level” control and “Clipping” LED located on top of

the LoC™22. Refer to the “Output Level” section for additional information.

5 Turn-On Mode

There are two options to activate the LoC™ 22, which can be selected via the

“Turn-on Mode” switch. Refer to the table below for detailed info and decide with

option is best suited for your specific system.

Setting Mode Function

DC Oset

(Preferred)

DC Oset Sensing

(Auto)*

Automatically turns on and o by detecting the

presence of small DC signal in OEM audio outputs.

Signal Signal Sensing

(Auto)*

Automatically turns on by detecting OEM audio signals

and turns o after signal is removed (varies, depending

on input signal levels).

6 Output Level

The “Output Level” control and “Clipping” LED are used together to assure clean,

unclipped audio output is delivered to your aftermarket amplifiers or signal

processors. Rotating the control clockwise will result in increased output (louder for a

given input voltage). Rotating the control counter-clockwise will result in decreased

output (quieter for a given input voltage). Follow the steps below to adjust the

output level of the LoC™ 22.

Necessary Equipment

CD with a sine-wave test tone recorded at 0 dBfs reference level in the

frequency range to be amplified for that set of channels (50 Hz for subwoofer

channels, 1 kHz for a midrange application). Do not use attenuated test tones

(-10 dB, -20 dB, etc.). If your OEM source unit is not equipped with a CD player,

you may transfer the test tone to a portable media player or thumb drive and

connect to your source unit’s auxiliary input. Make sure to disable any EQ/DSP

modes on your portable media player during level setting.

The Six-Step Procedure

1. Disconnect the RCA cables from the “Line Output” jacks.

2. Turn off or center all processing (bass/treble, loudness, EQ, etc.) on the source

unit. Set the fader control to the center position and set the source unit

volume to ¾ of maximum.

3. Set the “Input Load” switch to “Normal”. Turn the “Output Level” control all

the way down.

4. Verify that you have disconnected the “Line Output” jacks before proceeding.

Play a track with an appropriate sine wave (within the frequency range to be

amplified) at ¾ source unit volume.

5. Slowly increase the “Output Level” control until the “Clipping” LED turns solid

green. This corresponds to 2V RMS output. If you continue to increase the

level, the “Clipping” LED will change to red above 8V RMS, indicating output

clipping. Note: If the does not power up at all, this may indicate that LoC™ 22

the factory amplifier employs a load detection circuit that looks for a low-

impedance load (expecting a speaker) in order to enable audio output. If there

is no output from the factory amplifier, change the position of the “Input

Load” switch from the default “Normal” position to the “Low Z” position. This

will present a safe and appropriate load to the factory amplifier and correct

the muting behavior.

6. Once you have adjusted the LoC™ 22’s “Output Level” control, reduce the

source unit’s volume to prevent sudden output bursts and reconnect the

“Line Output” jacks. Proceed with adjusting the amplifier’s input sensitivity

controls accordingly.

It will be necessary to re-adjust the “Output Level” control if any of the source

unit’s sound settings are changed after configuring the “Output Level” with this

procedure. This applies to equalizer/tone and balance/fader controls.

Produktspezifikationen

Marke:	JL Audio
Kategorie:	Audio/Video-Konverter
Modell:	LoC 22

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